S 277th ST over Union Pacific RR
GoodKing County, Washington · 0.5 MI East of SR-167 · Structure no. 087190000000000
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected October 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 272 ft
- 3 main spans
- Daily traffic
- 26,000
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
S 277th ST over Union Pacific RR is a concrete continuous tee beam carrying S 277th ST over Union Pacific RR in King County, Washington. It was built in 2003, so it is 22 years old, younger than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 26,000 vehicles a day, roughly 11% of them trucks, projected to reach 36,400 by 2040. The structure is 272 ft (82.9 m) long and 62 ft wide. If it were closed, the detour would be 6.8 mi (11 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 277th ST over Union Pacific RR built?
It was built in 2003, making it 22 years old in 2025.
What condition is S 277th ST over Union Pacific RR in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.
How much traffic does S 277th ST over Union Pacific RR carry?
About 26,000 vehicles per day (2020 count), of which roughly 11% are trucks.
How long is S 277th ST over Union Pacific RR?
The structure is 272 ft (82.9 m) long with a longest span of 122 ft (37.2 m) and a deck 62 ft wide.
Who owns S 277th ST over Union Pacific RR?
It is owned by the City or Municipal Highway Agency.